EFCO 8800 Series Assembly Instructions Vol.2 - Manual (Page 16)

EFCO 2009 Page 16
Series 8700 / 8800 Unitized Curtain Wall Assembly Instructions - Volume 2
Figure 34
Section 5 - SSG Unit Glazing: D. Weather Seal Application
Figure 35 Figure 36 Figure 37
Sealant
Continuity Joint
1. Using an approved solvent or cleaner, clean the sealant contact surfaces of the glazing and adapters of all oils and other contaminants.
2. If sealant primer is required, apply it per the primer/sealant manufacturer’s instructions.
3. Insert 3/8” diameter backer rod between the glazing and adapters around all four corners of each lite of glazing. Refer to Figure 38 on the following page for
more information.
4. Apply sealant into the void between the adapters and glazing. If the sealant is properly and carefully applied, masking tape is not necessary on the adjacent
surfaces.
5. Before the sealant begins to cure or skin over, tool the sealant into the joints smoothly, taking care to smooth and blend the sealant in the corners and
intermediate intersections as shown below. Seen in section view, the sealant should have an hourglass shape and maintain a 2:1 width to depth ratio as
shown in Figure 38 on page 17. Remove any excess sealant from the surrounding surfaces before the sealant begins to cure.
Sealant
Continuity Joint
Sealant
Continuity Joint